Software Development Engineer III (Java Backend)

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About the role

At SIXT, we are engineering the future of mobility — one system at a time. As a Senior Backend Engineer in our BranchOps team, you will engineer the systems that power the full vehicle turnaround lifecycle and branch-level fleet orchestration, with deep integration into our IoT-connected fleet infrastructure. This is a role where backend engineering meets real-world operations at scale, in a team that builds with purpose and moves with pace. If this sounds like your next move, apply now and become part of something bigger. YOUR ROLE AT SIXT • You will design and build robust backend services in Java that power vehicle turnaround and fleet orchestration workflows • You will contribute to the design and evolution of distributed, event-driven systems that operate at branch level and at global scale • You will develop and maintain shared libraries and internal tooling that improve reliability and delivery speed across the BranchOps engineering team • You will collaborate closely with product, operations, and engineering stakeholders to translate complex business workflows into scalable technical solutions • You will actively integrate AI coding tools such as Claude and Cursor into your daily development workflow, helping to embed AI-assisted engineering as a standard practice within the team YOUR SKILLS MATTER • You hold a B.Tech, B.E., or Master's Degree in Computer Science or a closely related discipline • You bring 9+ years of hands-on experience in sophisticated engineering environments — including cloud-native application development, scalability problem-solving, and event-driven system design, ideally within a start-up or scale-up setting • You have strong, production-proven experience with Java and Spring Boot (must-have) and are confident navigating a modern microservices landscape end to end • You have designed or operated distributed systems and microservices architectures, with a clear understanding of the trade-offs that come with operating at scale • You have a solid grasp of event-driven patterns, pub-sub models, and message brokers such as Apache Kafka • You actively use AI coding assistants — such as Cursor, Claude— to accelerate your work, while confidently recognising their limitations and knowing when engineering judgment must take precedence WHAT WE OFFER • Grow Further, Go Further  Advance your skills and unlock your potential with our Education Assistance Program • Balance Your Career  Benefit from a hybrid work environment complemented by flexible working hours • Fuel Your Day  Great work deserves great fuel. Enjoy meal benefits that keep you energized and ready to bring your A-game • Your Wellness Matters  We're committed to your well-being through comprehensive insurance, wellness programs, health checkups, and fitness benefits • Recognition That Counts  We create a culture of appreciation, rewarding your impact through referral incentives and loyalty perks as you advance with us • Growing Families, Growing Joy  As your family grows, we're here to celebrate with a special newborn gift for your little one About us: We are a globally leading mobility service provider with a revenue of €4.3 billion and around 9,000 employees worldwide. Our mobility platform ONE combines our products SIXT rent (car rental), SIXT share (car sharing), SIXT ride (taxi, ride, and chauffeur services), and SIXT+ (car subscription), giving our customers access to our fleet of 360,000 vehicles, the services of 4,000 cooperation partners, and around 5 million drivers worldwide. Together with our franchise partners, we are present in more than 100 countries at 2,000 rental stations. At SIXT, top-tier customer experience and outstanding customer service are our highest priorities. We believe in true entrepreneurship and l

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